HPE Shadowbase Zero Downtime Migration (ZDM)

Bird migration

HPE Shadowbase ZDM software provides continuous availability, eliminates planned downtime (no downtime for the application during migration), and removes business risk from application upgrades.

Zero Downtime Migrations Case Study: A Large Financial Institution Migrates Datacenters with No Downtime Using HPE Shadowbase ZDM
Zero Downtime Migrations Case Study: HPE Shadowbase ZDM Achieves Zero Downtime Migration for Large Bank Datacenter

HPE Shadowbase ZDM:

Zero Downtime Migrations Case Study: A Major ISP Migrates from Sybase to HPE NonStop with No Downtime
Zero Downtime Migrations Use Case: Major ISP Migrates to HPE NonStop for Extreme Availability with No Downtime
Zero Downtime Migrations Use Case: Migrate to HPE NonStop for Higher Availability

Figure 1 illustrates how HPE Shadowbase software can achieve zero application downtime via a multi-node upgrade or a single-system upgrade. In both cases, the new (upgraded) database and the current database are kept synchronized by Shadowbase data replication, so that if an issue arises with the new system, it is easy to revert to the current system without incurring any downtime. This configuration also enables the stepwise migration of users from the current to the new system, enabling a controlled and safe incremental migration, as opposed to the risky, all-at-once big-bang approach. All possible migration steps are not represented by this figure; for more details, please refer to our white paper:

Zero Downtime Migrations White Paper: Using HPE Shadowbase to Eliminate Planned Downtime via Zero Downtime Migration
Zero Downtime Migrations Use Case: Massive Datacenter Migration for Money Transfer Firm
Zero Downtime Migrations Use Case: Manage Massive Data Growth with Online Repartitioning

Diagram of HPE Shadowbase zero application downtime. Two ZDM examples, one a multi-node upgrade, the other a single-system upgrade. For a full image description, please see the paragraph that starts with "Figure 1 illustrates."

Figure 1 — HPE Shadowbase Zero Application Downtime

Zero Downtime Migrations White Paper: Switching Replication Engines with Zero Downtime and Less Risk

Solution Benefits: